johns



. e. McD. JOHNS.

ATOMIZER.

APPLICATION FILED FEB. 20, 1919.

Patented Dec. 7, 1920.

UNITE STATES AI creme.

GEORGE M01). JOHNS, OF ST. LOUIS, MISSOURI, ASSIGNORTO W. N. MATTHEWSAND BROTHER, INC., 013 ST. LOUIS, MISSOURI, A CORPORATION OF NEW MEXICO.

ATOMIZER.

Application filed February 20, 1919.

To all whom it may (ioncern:

Be it known that I, GEORGE MoD. J OHNS, a citizen of the United States,residing at St. Louis, Missouri, have invented a certain new and usefulImprovement in Atomizers, of which the following is a full, clear, andexact description, such as will enable others skilled in the art towhich it appertains to make and use the same, reference being had to theaccompanying drawings, forming part of this specification, in which-Figure 1 is a top plan view of my atomizer.

Fig. 2 is a vertical sectional view through the same. I

Fig. 3 is a side elevation.

This invention relates to a new and useful improvement in atomizersdesigned for use in spraying paint, insecticides, etc., the object beingto simplify the construction of devices of this kind thereby cheapeningthe cost of manufacture and by a common con trol of the material andcompressed air supply, together with the independent regulation of thesesupplies, rendering the device eflicient in operation.

In the drawings, 1 indicates a casting which is provided with ducts 1*(for compressed air) and 1 (for the material to be sprayed), said ductsextending in parallelism through a nozzle head 1. It is obvious thatthese ducts may be employed in the reverse order if desired. 2 indicatesa differential valve bore intersecting the ducts 1 and 1 and in whichoperates a cylindrical valve 8 having reduced annuli 8 and 3 designed toregister with the ducts 1 and 1 whereby a common control of said ductsmay be obtained. A spring 4 tends to hold the valve 3 in its outward orclosed position and a button 5 is carried by the end of the valvewhereby it may be manipulated. 4 6 is a packing nut for closing the endof the valve 4 and forming an air tight joint at this point. 7 indicatesa pipe screwed into the casting 1 and communicating with the duct 1 Thelower end of this pipe is threaded to receive a nut 8 on which is anipple 8 for connection to a flexible tube, not shown, leading from asource of compressed air supply. 9 indicates a handle having a tooth orprojection at its upper end designed to fit into a recess in casting 1Specification of Letters Patent.

Patented Dec. '7, 1920.

Serial No. 278,134.

whereby the handle is prevented from rotation. The handle is secured inposition by means of the nut 8.

10 indicates a nipple communicating with a duct 1 and which is designedto be con nected to a flexible tube, not shown, leading from a source ofmaterial supply. The duct 1 extends axially through the barrel of theatomizer and terminates in a nipple 11. The duct l also extends from thebarrel of the atomizer and terminates to one side of the nipple 11 andwithin the chamber of a nozzle 12, the details of which are disclosedand claimed in Patent No. 1,330,448, dated February 10, 1920.

In order to independently regulate the passage of compressed air andmaterial through the ducts l and l I provide the casting 1 with threadedopenings which in tersect said ducts and in which openings are mountedvalves 18 and 14, respectively, said valves having knurled heads attheir outer ends by which they may be turned and adjusted.

In operation, the tubes leading from the source of compressed air supplyand material supply are connected, respectively, to the nipples 8 and10, after which the valves 13 and 14 are properly adjusted and then byoperating the valve 3 through the me dium of the button head 5, theoperator is enabled to secure the proper spraying of the material.

It will be readily understood that minor changes in the size, form andconstruction of the various parts of my atomizer may be made andsubstituted for those herein shown and described, without departing fromthe spirit of my invention, the scope of which is set forth in theappended claims.

What I claim is:

1. An atomizer comprising a casting pr0- vided with a nozzle head and anozzle, ducts passing through said casting and nozzle head, meanstraversing each duct for restricting the flow of fluid therethrough, andan operating valve for controlling the passage through both of saidducts.

2-. An atomizer comprising a casting provided with a nozzle head and ahandle, ducts passing through said casting and nozzle head, meanslocated in each duct for restricting the flow of fluid therethrough, and

an operating Valve independent of the aforctraversing each duct, valvesscrew-seated in said means for controlling the flow of fluid saidopenings, and an operating valve for through said ducts. controlling thepassage through said ducts. 10

3. An atomizer comprising a casting pro- In testimony whereof I hereuntoafiix my 5 vided With a nozzle head and a nozzle, ducts signature this17th day of February, 1919.

passing through said casting and nozzle head, threaded openings in thecasting and GEO. MoD. JOHNS.

